Tool for extracting the remnants of sign posts and method...

Details Tool for extracting the remnants of sign posts and method... Tool for extracting the remnants of sign posts and method...

2005-04-26

2005-04-26

Wilson, Lee D. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Lifter

C254S131000, C029S255000, C029S254000

Reexamination Certificate

active

06883781

ABSTRACT:
The tool is adapted for extracting the sheared remnant of a sign post having holes and comprises a shaft having a top and bottom end. To secure the tool to the remnant a clamp is provided comprising a stationary member integral to the bottom end of the shaft and a moveable member pivotally connected to the stationary member. Fixed to the stationary member is a guide member having a plurality of outwardly projecting pins. The pins have a diameter and spaced relationship adapted to correspond to the diameter and spaced relationship of the holes in the sign post remnant. When the clamp is inserted into the sign post remnant the pins will enter and tightly engage the holes in the signpost remnant. Connected to the top end of the shaft is a sliding hammer for imparting extraction forces to the sheared sign post remnant.

REFERENCES:
patent: 344653 (1886-06-01), Harmon
patent: 4482131 (1984-11-01), Hamilton
patent: 5504982 (1996-04-01), Sharp
patent: 6398188 (2002-06-01), Salman

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